/*
    * ====================================================================
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.core5.testing.reactive;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  
  import org.apache.hc.core5.function.Callback;
  import org.apache.hc.core5.http.ContentType;
  import org.apache.hc.core5.http.EntityDetails;
  import org.apache.hc.core5.http.HeaderElements;
  import org.apache.hc.core5.http.HttpException;
  import org.apache.hc.core5.http.HttpHeaders;
  import org.apache.hc.core5.http.HttpRequest;
  import org.apache.hc.core5.http.impl.BasicEntityDetails;
  import org.apache.hc.core5.http.message.BasicHeader;
  import org.apache.hc.core5.http.message.BasicHttpResponse;
  import org.apache.hc.core5.http.nio.ResponseChannel;
  import org.apache.hc.core5.http.protocol.HttpContext;
  import org.apache.hc.core5.reactive.ReactiveRequestProcessor;
  import org.reactivestreams.Publisher;
  
  public final class ReactiveEchoProcessor implements ReactiveRequestProcessor {
      public ReactiveEchoProcessor() {
      }
  
      @Override
      public void processRequest(
              final HttpRequest request,
              final EntityDetails entityDetails,
              final ResponseChannel responseChannel,
              final HttpContext context,
              final Publisher<ByteBuffer> requestBody,
              final Callback<Publisher<ByteBuffer>> responseBodyFuture
      ) throws HttpException, IOException {
          if (new BasicHeader(HttpHeaders.EXPECT, HeaderElements.CONTINUE).equals(request.getHeader(HttpHeaders.EXPECT))) {
              responseChannel.sendInformation(new BasicHttpResponse(100), context);
          }
  
          responseChannel.sendResponse(
                  new BasicHttpResponse(200),
                  new BasicEntityDetails(-1, ContentType.APPLICATION_OCTET_STREAM),
                  context);
          responseBodyFuture.execute(requestBody);
      }
  }